RemoteTrx old

IN PROGRESS

create linux baseline on RPI

• write image on SD card
• connect HDMI en keyboard
• boot first time
• create user,password
• set hostname
• enable SSH
• sudo dpkg-reconfigure locales
  • remove UK
  • add own country
  • default C.utf8

prepare software environment

• ssh into RPI as user
• sudo apt-get update
• sudo apt-get dist-upgrade
• sudo reboot

next

• ssh into RPI as user

 sudo apt-get git
 git clone https://github.com/sm0svx/svxlink.git

 sudo useradd --system svxlink
 sudo adduser svxlink audio

 sudo apt install cmake libcurl4-gnutls-dev libsigc++-2.0-dev libpopt-dev libgcrypt-dev libgsm1-dev 
 sudo apt install libspeex-dev libopus-dev libasound2-dev librtlsdr-dev qtbase5-dev qttools5-dev 
 sudo apt install libssl-dev libgpiod-dev librtlsdr-dev libjsoncpp-dev
 sudo apt install tcl-dev

build

 cd svxlink/src
 mkdir build
 cd build
 cmake -DWITH_SYSTEMD=ON ..
 make

 sudo make install
 sudo ldconfig

calibrate squelch

start VU meter:

 arecord -V mono -D hw:CARD=Device,DEV=0 -f S16_LE /dev/null

ensure headroom during noise reception, and signal reception.

noise 70% for now, 1750hz from set 38% from VU meter.